Improvement in grain-drills



NITED STATES PATENT EEICE.

EDVIN D. MEAD, OF SHORTSVILLE, NEW YORK.

IMPROVEMENT IN GRAIN-DRILLS.

Specification forming part of Letters Patent No. 165,015, dated J une 29, 1875 application led November 21, 1874.

To all whom it may concern:

Be it known that I, EDWIN D. MEAD, of Shortsville, county of Ontario, State of N ew York, have invented a Regulator or Out-Oft' for Grain-Drills, of which the following `is a specification The object of my invention is to increase or lessen the discharge-cavity of a distributer for grain-drills to permit `the sowing ot' large or small seed, and to so regulate the discharging capacity of a distributer for a given seed as to sow any desired. quantity, more or less, within the widest practical limits, Without a change of gear or moving` any ofthe working parts; also to accomplish this in a simple, reliable, and substantial manner, capable ot' the nicest graduation, notliable to be affected in its graduation by the discharge ofthe seed, but positive and reliable in its adjustment.

I use the common force-feed distributer, or its equivalent, entire, of which, reference be ing had to the drawing accompanying this specification, B represents the disk, E the run.. Passing through the disk, the lower part ot' which is broken away in the drawing, and turning upon a pivot formed in the disk, is the regulator or cut-011 C, the convex part ot' which corresponds to the concave surface of the run E. The outer and upper part of the eut-olf terminates in the lever A, in the form shown. The series of levers, one from each distributer, are connected to a simple straight rod or bar, not shown in the drawing, giving to each the same positive motion and adjustment. One lever ot' the series terminates in an index-point, which, with a graduating-plate upon the side of the seed-box, shows the amount of` seed sown. I make the discharge cavity of the distributer large enough for the greatest amount of seed desired to be sown. Across this cavity extends the cut-off C, which; by a proper motion of the lever A, regulates the' discharge of thev seed from large to small quantities, as desired.

I am aware that a patent was granted to J. F. Winchell September 29, 1874, No.. 155,562,

for an improvement in feeding apparatus for charge-opening of the distributer by movin g the lower part of the case to or from the wheel. In my invention the case and feed-wheel or run retain at all times the same relative position, and the `discharge is regulated by a cut-oft' independent of any change in the position of the feed-Wheel or run and the case. It will also be observed that, by placing the regulator or cut-ott directly across the dischargecavity, through a hole in the disk, and moving on a center parallel with the surface of the same, and at right angles with the shaft of the run E, I secure a device that is held firmly in its place, and one in which there is little or no tendency to move from its adjustment by the discharge of the seed. 'Ihe long sweep ot' the top of the` lever A, compared with the movement of the cutoff O, secures nicety'of graduation, and the absence of all intermediate joints, toothedsegments, Sac., gives a reliable and positive adjustment.

I do not confine myself tothe particular form of distributer here shown, but would use any to which the cut-oft', substantially as shown, could be applied.

What I claim as my invention,and desire to secure by Letters Patent, is-

The semici-rcular cut-oli' O, with its lever A, in combination with the concave feed-'wheel E, for regulating the flow ot' seed, substantially as set forth.

EDWIN D. MEAD.

n Witnesses:

N. K. COLE, GEO. H. PRESTON. 

